Bank of England Governor Mark Carney has launched a withering attack on cryptocurrencies such as bitcoin Friday and urged regulators around the world to monitor them in the same way as other financial assets.

A sharp fall in the value of Bitcoin may cause other cryptocurrencies to crash, but is unlikely to have a significant impact on traditional assets, according to new research published in the journal Economics Letters.

The head of the Bank of International Settlements, the central bank for central banks, on Tuesday lambasted bitcoin as a speculative bubble and said authorities need to be ready to protect public trust in the financial system.

A hacking theft that netted $530 million, a ban on Facebook advertising, regulation even in Russia and more wild price swings: despite another stomach-churning week for cryptocurrencies, analysts say they are here to stay.

A senior U.S. Treasury official touring Asia has urged banks and financial regulators in the region and elsewhere to do more to tighten oversight of booming trading in bitcoin and other crypto currencies.